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                <ol class="chapter"><li class="chapter-item expanded "><a href="about.html"><strong aria-hidden="true">1.</strong> about</a></li><li class="chapter-item expanded "><a href="index/index.html"><strong aria-hidden="true">2.</strong> index</a></li><li class="chapter-item expanded "><a href="log/log.html"><strong aria-hidden="true">3.</strong> log</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="log/2021/about.html"><strong aria-hidden="true">3.1.</strong> 2021</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="log/2021/2021-12-21(2).html"><strong aria-hidden="true">3.1.1.</strong> 2021-12-21(2)</a></li></ol></li></ol></li></ol>
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                    <h1 class="menu-title">share my notebook</h1>

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                        <h1 id="about-the-notebook"><a class="header" href="#about-the-notebook">about the notebook</a></h1>
<ol>
<li>Here are two part of this notebook: <a href="./index/index.html">the index</a> and <a href="./log/log.html">the log</a>.</li>
<li><a href="./index/index.html">The index</a> contains structured knowledge pieces.</li>
<li><a href="./log/log.html">The log</a> records the process of my learning.</li>
<li>Establish <a href="./index/index.html">the index</a> takes time. It's slower than <a href="./log/log.html">the log</a>.</li>
<li>Using searching engine (press <code>S</code>) to search in the log is recommended.</li>
</ol>
<div style="break-before: page; page-break-before: always;"></div><div style="break-before: page; page-break-before: always;"></div><h1 id="log"><a class="header" href="#log">Log</a></h1>
<ol>
<li>It's difficult to establish a prefect structure at the beginning.</li>
<li>So just log the pieces of knowledge in order of time.</li>
<li>Here will be clean and neat structure in the <a href="log/../index/index.html">index</a>.</li>
<li>Before collected in the index, just search it via search engine. (press <code>S</code>)</li>
</ol>
<div style="break-before: page; page-break-before: always;"></div><h1 id="2021"><a class="header" href="#2021">2021</a></h1>
<ol>
<li>This project begins since 2021.12.21(Tue).</li>
<li>There are few days rest of this year.</li>
<li>So place those days directly under this folder.</li>
</ol>
<div style="break-before: page; page-break-before: always;"></div><h1 id="2021-12-212"><a class="header" href="#2021-12-212">2021-12-21//2</a></h1>
<h2 id="remote-repository-both-on-github-and-gitee"><a class="header" href="#remote-repository-both-on-github-and-gitee">Remote repository both on <a href="https://github.com">Github</a> and <a href="https://gitee.com">Gitee</a>.</a></h2>
<p><a href="https://github.com">Github</a> and <a href="https://gitee.com">Gitee</a> both recommended their own name as <code>origin</code>,
that if you use the two sites with the name <code>origin</code> at the same time, they will conflict.</p>
<pre><code class="language-bash"># the default guide on the two platforms, which will conflict if you use them at the same time.
git remote add origin git@github.com:YourName/your-repo.git
git remote add origin https://gitee.com/YourName/your-repo.git
</code></pre>
<p>For using the two side in the same repo, the name of origin shall be change.
Followings are the recommended command templates.</p>
<pre><code class="language-bash"># add remote origin
git remote add github git@github.com:YourName/your-repo.git
git remote add gitee https://gitee.com/YourName/your-repo.git

# push the first time
git push -u github main
git push -u gitee main

# push then
git push github main
git push gitee main
</code></pre>
<h2 id="config-default-branch-name-in-git"><a class="header" href="#config-default-branch-name-in-git">Config default branch name in Git</a></h2>
<ol>
<li>As the &quot;Black Lives Matter&quot;, the word &quot;master&quot; is sensitive.</li>
<li>Github recommended using &quot;main&quot; for the default branch name.</li>
</ol>
<pre><code class="language-bash">git config --global init.defaultBranch main
</code></pre>
<h2 id="about-gitattributes-config-file"><a class="header" href="#about-gitattributes-config-file">About <code>.gitattributes</code> config file.</a></h2>
<ol>
<li>Images and texts are different.
<ul>
<li>Images are usually static resources while texts might usually be changed, such as editing the code.</li>
<li>There are lines in text while there are probably seldom lines in images.</li>
<li>In git, the way to manage code and static resources are different.</li>
</ul>
</li>
<li>End of line (<code>eol</code>) are different between platforms.
<ul>
<li>Unix, Linux, MacOS uses <code>lf</code> (<code>\n</code>) as the end of line.</li>
<li>Windows uses <code>crlf</code> as the end of line.</li>
<li>When save files cross platform, there will be a change of each line in Git, which is awful.</li>
</ul>
</li>
<li>In order to config those items, there need a <code>.gitattributes</code> config file located at repo root.</li>
<li>The recommended config of <code>.gitattributes</code> file as follow, which means:
<ul>
<li>auto detect text or image.</li>
<li>use <code>lf</code> as default end of line (eol).</li>
</ul>
</li>
</ol>
<pre><code class="language-gitattributes">* text=auto eol=lf
</code></pre>
<h2 id="gitignore-to-ignore-files-in-git"><a class="header" href="#gitignore-to-ignore-files-in-git"><code>.gitignore</code> to ignore files in Git.</a></h2>
<ol>
<li><code>.gitignore</code> file config file to ignore by Git.</li>
<li>Lock files, dependencies packages and output files are recommended to ignore.
<ul>
<li>Record a lot of file will cost a lot of memory and computational resources.</li>
<li>Recommend only record code written by human and necessary resources.</li>
<li>Files and folders managed automatically by scripts are supposed to be ignored.</li>
</ul>
</li>
<li>Use regex expression (<code>folder-name/**</code>, <code>**.xxx</code>) and <code>#</code> to write comment.</li>
<li>To include file in an ignored folder, use <code>!</code> before its path regex expression.</li>
<li>Better only use a single <code>.gitignore</code> file at the root of a repo.</li>
</ol>

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